bulkheads
1 inch pvc for draining
1/2 inch pvc for feeding
and a big ass water pump,

you need to drill bigger holes in the 1st mesh bucket, for more roots.
(just re drill the already preexisting holes bigger)

the set up they give you for the online kit isn't that great, when your recirculating water you want hugh amounts moving fast and into a water fall effect for uber DO. the kit they give you just isn't sufficent enough to do that.